code: def _get_posterior_samples(self) -> Tensor:
      pass
  
file_path: ReAgent/reagent/mab/thompson_sampling.py
imports: from abc import abstractmethod
  from typing import List, Optional
  import torch
  from reagent.mab.mab_algorithm import MABAlgo, reindex_multiple_tensors
  from torch import Tensor
label_desc: Use image node_id 1 for calling the BaseThompsonSampling obj's underlying member method code with example usage: obj._get_posterior_samples() without return types